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Open-source package vulnerability · Maven

CVE-2024-31987: XWiki Platform remote code execution from account via custom skins support

criticalCVSS 3.1 9.9GHSA-cv55-v6rw-7r5v

Impact Any user who can edit any page like their profile can create a custom skin with a template override that is executed with programming right, thus allowing remote code execution. To reproduce, as a user without edit, script or admin right, add an object of class XWiki.XWikiSkins to your profile. Name it whatever you want and set the Base Skin to flamingo.

Published Apr 10, 2024

Affected packages

org.xwiki.platform:xwiki-platform-oldcore

Ecosystem
Maven
Affected
>= 6.4-milestone-1, < 14.10.19
Fixed in
14.10.19
Check
mvn dependency:tree -Dincludes=org.xwiki.platform:xwiki-platform-oldcore

org.xwiki.platform:xwiki-platform-oldcore

Ecosystem
Maven
Affected
>= 15.0-rc-1, < 15.5.4
Fixed in
15.5.4
Check
mvn dependency:tree -Dincludes=org.xwiki.platform:xwiki-platform-oldcore

org.xwiki.platform:xwiki-platform-oldcore

Ecosystem
Maven
Affected
>= 15.6-rc-1, < 15.10-rc-1
Fixed in
15.10-rc-1
Check
mvn dependency:tree -Dincludes=org.xwiki.platform:xwiki-platform-oldcore

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

Any user who can edit any page like their profile can create a custom skin with a template override that is executed with programming right, thus allowing remote code execution.

To reproduce, as a user without edit, script or admin right, add an object of class XWiki.XWikiSkins to your profile. Name it whatever you want and set the Base Skin to flamingo. Add an object of class XWikiSkinFileOverrideClass and set the path to macros.vm and the content to:

#macro(mediumUserAvatar $username)
  #resizedUserAvatar($username 50)
  $services.logging.getLogger('Skin').error("I got programming: $services.security.authorization.hasAccess('programming')")
#end

Back to your profile, click Test this skin. Force a refresh, just in case. If the error "Skin - I got programming: true" gets logged, the installation is vulnerable.

Patches

This has been patched in XWiki 14.10.19, 15.5.4 and 15.10RC1.

Workarounds

We're not aware of any workaround except upgrading.

References

  • https://jira.xwiki.org/browse/XWIKI-21478
  • https://github.com/xwiki/xwiki-platform/commit/3d4dbb41f52d1a6e39835cfb1695ca6668605a39 (>= 15.8 RC1)
  • https://github.com/xwiki/xwiki-platform/commit/da177c3c972e797d92c1a31e278f946012c41b56 (< 15.8 RC1)

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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